Patents by Inventor Heon-Kyo SIM

Heon-Kyo SIM has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for estimating direction of arrival of radar reception signal using antenna array extrapolation
    Patent number: 11892558
    Abstract: A method and an apparatus for estimating direction of arrival of radar reception signal using antenna array extrapolation. Obtained is a transformation matrix representing a relationship between phases of reception signals received through ith to (N?2+i)th antennas and a phase of a reception signal received through (N?1+i)th antenna in a ULA antenna unit including N actual antennas. A phase of a virtual reception signal received through a new (N+i)th virtual antenna is generated by multiplying values corresponding to phases of the reception signals received through (i+1)th to (N?1+i)th antennas by the transformation matrix. A magnitude of the virtual reception signal received through the (N+i)th virtual antenna is obtained by averaging magnitudes of the reception signals received through ith to (N?1+i)th antennas.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: February 6, 2024
    Assignee: Seoul National University R&DB Foundation
    Inventors: Seong-Cheol Kim, Seong-Wook Lee, Heon-Kyo Sim
  • METHOD AND APPARATUS FOR ESTIMATING DIRECTION OF ARRIVAL OF RADAR RECEPTION SIGNAL USING ANTENNA ARRAY EXTRAPOLATION
    Publication number: 20210080542
    Abstract: A method and an apparatus for estimating direction of arrival of radar reception signal using antenna array extrapolation. Obtained is a transformation matrix representing a relationship between phases of reception signals received through ith to (N?2+i)th antennas and a phase of a reception signal received through (N?1+i)th antenna in a ULA antenna unit including N actual antennas. A phase of a virtual reception signal received through a new (N+i)th virtual antenna is generated by multiplying values corresponding to phases of the reception signals received through (i+1)th to (N?1+i)th antennas by the transformation matrix. A magnitude of the virtual reception signal received through the (N+i)th virtual antenna is obtained by averaging magnitudes of the reception signals received through ith to (N?1+i)th antennas.
    Type: Application
    Filed: May 9, 2018
    Publication date: March 18, 2021
    Applicant: Seoul National University R&DB Foundation
    Inventors: Seong-Cheol KIM, Seong-Wook LEE, Heon-Kyo SIM